BLACK/BROWN

last night there was nothing on my lawn and this morning I noticed aLOT of patches and streams that look black almost like the lawn was burned, But when I looked closer it appeared to be eggs scattered every were and when I touched it, it smeared and smelt like dirt, What would do this ? and is it dangerous? We have pets and new puppies? On a differant subject what would get rid of those berry vines there every were! Thank you